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(c) When station No.1 is reconnected to the network
Station No.1 that was disconnected due to a communication error is reconnected to the network as a normal
station when it recovers from the error. At this time, system switching does not occur.
Cyclic transmission after reconnection of station No.1 is illustrated below.
Redundant system
Tracking cable
Normal station
No.3
Normal station
No.4
Link relay (LB)
LB0 to LBFF
LB100 to LB1FF
LB200 to LB2FF
LB7FFF
No.1, 2 send range No.1, 2 send range
No.3 No.3
No.4
No.3
No.4 No.4
No.1, 2 No.1, 2
No.3 send range
No.4 send range
The same send range is used for station
No.1 and 2 by tracking transfer.
System A
(standby system)
Normal station
No.1
System B
(control station)
Sub-control station
No.2
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